Bung puller



Patented Aug. 24, 1937 UNITED STATES BUNG FULLER Alfred A. Lee, Dayton, Ohio Application June 5,

2 Claims.

This invention relates to new and useful improvements in bung pullers.

It is one of the principal objects of my invention to provide a bung puller of the hand type which is simple and durable in construction and positive and convenient in operation.

Another object of my invention is to provide a puller for removing a bung or plug from a cask,

barrel, keg or the like, without putting a strain on the container itself, since the puller bears against the bushing holding the plug.

Other important and incidental objects will be brought out in the following specification and particularly set forth in the subjoined claims.

In the accompanying drawing illustrating my invention, Figure 1 is a longitudinal, sectional view taken through my bung puller in a position preparatory to removing a plug from a bushing in a liquid container. Figure 2 is a cross-sectional view taken through the puller on the line 2-2 of Figure 1. Figure 3 is a top plan View of the plug fitted in said bushing. And Figure 4 is a perspective view of the key end of the puller plunger.

Referring to the accompanying drawing, the numeral 6 designates the head of a receptacle such as a keg containing a flanged bushing 2. Fitted in this bushing is a cylindrical metal plug 3, which in this instance is embedded in a hard rubber cup 4 that has a seal tight fit in the bushing. The

plug is cast with a central slot or hole 5 that is so formed as to provide under-extending side recesses to receive the ends of an extractor bit 6 on the lower end of a plunger 7, when the bit is given a quarter turn.

My plug extractor, which contains the plunger '7, will now be described. Referring to Figures 1 and 2, the numeral 8 designates a dome-topped cylindrical housing that is preferably cast from an aluminum alloy. This casting contains an axial hole 9 extending from its bottom well into its top to receive the plunger 1 for vertical reciprocation therein. This hole 9 has a reduced top portion In to receive the end of the plunger 1 5 which is above an annular notched shoulder ll thereon. As illustrated in Figure 1, this plunger has formed in its lower peripheral portion l2 between the shoulder ii and a narrow neck part 13, a straight groove l4 into which a guide [5 projects from the inner wall of the housing to guide the plunger during its up and down movement within the latter.

The plunger 1 is formed with an axial hole [6 to receive a stiff helical spring I! that engages the inner surface of the dome-shaped top of the hous- 1936, Serial No. 83,727

ing 8 to normally hold the plunger in a down position.

For the purpose of raising the plunger to extract the plug 3 from the bushing 2, the following means are provided. Formed in the middle portion of the wall of the casting 8, on each side thereof, are slots !8, iii, to receive the inner ends of handles l9, l9 respectively that are preferably made of cold rolled steel. Each handle is pivotally mounted on a transverse fulcrum pin 2!! whose ends are fitted in holes in bosses 2|, 2| on the casting roll. In order to clear these fulcrum pins during its reciprocating movement, the plunger 1 is formed with a flat surface 22 on each side.

The inner ends of the handles 59 are formed with recessed tips 23 that engage notched portions 24 in the annular shoulder i i on the plunger to raise the latter against the compression of the spring i'i when downward pressure is exerted upon the outer ends of these handles.

Secured to the lower end of the housing 8 by screws 25, is a cup-shaped base plate 263 formed with an axial hole through which the plunger projects.

When it is desired to remove the plug 3 from the container head I shown in Figure 1 for example, the plunger bit 6 is inserted in the slot 4 in said plug and then given a quarter turn by a rotation of the casting 8, to bring the bit to an extracting position within the plug. A downward pressure is then exerted upon the outer ends of the handles I9, E9 to force the base plate 26 into engagement with the bushing 2, after which a further downward pressure exerted upon the handles will elevate the plunger to raise the plug out of the bushing. During this extraction of the plug, the base plate of the puller housing bears against the bushing, instead of upon the container head itself, thus saving the latter from injury,

From the above description, it will be readily observed that the operation of extracting a bung or plug from a container bushing is an easy and positive one when my puller is employed.

Having described my invention, I claim:

1. A device for pulling a plug from a bushing, comprising a housing adapted to engage said plug, a plunger reciprocable in said housing, a

bit on the lower end of the plunger, a helical spring in said housing for normally holding the plunger'in a down position, a shoulder on said plunger, and a pair of handles pivotally mounted in said housing for engagement with said shoulder to raise the plunger, and through it the plug,

when a. downward pressure is exerted upon the outer ends of said handles.

2. A device for pulling a plug from a bushing, comprising a cylindrical housing having a base adapted to fit against said bushing and also having an axial hole extending from said base to a point near the top of the housing, a plunger reciprocable in said hole, an annular shoulder formed with notches, on said plunger, a bit on the lower end 01 said plunger to engage said plug, said plunger formed with an axial hole in its upper end, a helical spring fitted in said hole for compression by the top of said housing when ALFRED A. LEE. 

